▪ Abstract The Re-Os isotope sytem, based on the long-lived β− transition of 187Re to
187Os, has matured to wide use in cosmochemistry and high-temperature geochemistry …

An ore deposit by definition must be economically viable, that is to say it must contain
sufficient material at high enough grade to make it possible to mine and process it at a profit …

A relativelyhigh-temperature oxidizing digestion using aqua regia has been developed for<
0.1-5gsize samples of various types of rocks including silicates, sulfides, and metals prior to …

Over the past decade the marine osmium isotope record has been developed into a new
tracer in palaeoceanographic research. Several analytical developments, particularly in the …

Osmium isotopic compositions and concentrations have been determined for deltaic and
continental shelf sediments from three major rivers (the Amazon, Changjiang, and …

Veined peridotite xenoliths from the mantle beneath the giant Ladolam gold deposit on Lihir
Island, Papua New Guinea, are 2 to 800 times more enriched in copper, gold, platinum, and …

Abstract Seven 187 Re-187 Os ages were determined for molybdenite and pyrite samples
from two well-dated Precambrian intrusions in Fennoscandia to examine the sustainability of …

Rhenium and Osmium abundances were determined on molybdenites from eighteen ore
deposits in Japan; fifteen vein-type, a skarn-type, a greisen-type, and a pegmatite-type …

The origins of the Sudbury Structure and associated Igneous Complex have been
controversial. Most models call for a major impact event followed by impact‐induced …

Abstract Magmatic Cu-Ni sulfide ores and spatially associated ultramafic and mafic rocks
from the Noril'sk I, Talnakh, and Kharaelakh intrusions are examined for Re-Os isotopic …